from rest_framework import serializers
from django.conf import settings
from .models import Project, Asset, CardLayer


class ProjectSerializer(serializers.ModelSerializer):
    class Meta:
        model = Project
        fields = [
            'id', 'name', 'template_id',
            'card_width', 'card_height',
            'design', 'card_overrides', 'number_layout', 'face_orientations',
            'export_resolution', 'export_include_back',
            'created_at', 'updated_at',
        ]


class AssetSerializer(serializers.ModelSerializer):
    file_url = serializers.SerializerMethodField()

    class Meta:
        model = Asset
        fields = ['id', 'asset_type', 'asset_key', 'file_path', 'file_name',
                  'file_url', 'width', 'height', 'uploaded_at']

    def get_file_url(self, obj):
        if obj.file_path:
            request = self.context.get('request')
            if request:
                return request.build_absolute_uri(f'{settings.MEDIA_URL}{obj.file_path}')
            return f'{settings.MEDIA_URL}{obj.file_path}'
        return None


class CardLayerSerializer(serializers.ModelSerializer):
    class Meta:
        model = CardLayer
        fields = '__all__'


class ProjectDetailSerializer(serializers.ModelSerializer):
    assets = AssetSerializer(many=True, read_only=True)
    layers = CardLayerSerializer(many=True, read_only=True)

    class Meta:
        model = Project
        fields = [
            'id', 'name', 'template_id',
            'card_width', 'card_height',
            'design', 'card_overrides', 'number_layout', 'face_orientations',
            'export_resolution', 'export_include_back',
            'assets', 'layers',
            'created_at', 'updated_at',
        ]